Machine for making can-bodies.



PATENTED FEB. 14, 19.05.

J. ANDERSON. MACHINE FOR MAKING CAN BODIES.

APPLICATION FILED BEP'I'.10, 1904.

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J. ANDERSON. MACHINE FOR MAKING GA N BODIES.

APPLIOATION FILED SEPT. 10, 1904.

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PATENTED FEB. 14, 1905.

J. ANDERSON. MACHINE FOR MAKING (JAN BODIES.

APPLIOATION FILED SEPT. 10, 1904.

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' UNITED STATES Patented February 14, 1905.

PATENT OFFICE.

JOHN ANDERSON, OF NEW YORK, N. Y.,-ASSIG NOR OF ONE-HALF TO SAMUELORLINSKY, OF YORK, N. Y.

MACHINE FOR MAKING CAN-BODIES.

SPECIFICATION forming part of Letters Patent Nb. 782,432, dated February14,1905.

Application filed September 10, 1904:. Serial No. 223,974.

To all whom, it may concern:

Be it known that I, JOHN ANDERSON, a citizen of Sweden, residing atNeWYork city, (Brook-.

lyn',) county of Kings, and State of New York, have invented new anduseful Improvements in Machines for Making Can-Bodies, of which thefollowing is a specification. i

This invention relates to an improved machine for forming sheetmetalcan-bodies from blanks having flanged ends.

The machine folds the blank into square, round, or other form,interlocks the flanges, and compresses the seam, so that a continuousbottomless can-body is produced.

Briefly stated, the machine operates as follows: The blank is, by aslide, centered across the open front of a matrix, into which it isforced by a core. The two ends of the blank are bent inward to overlap,and then the blank is expanded laterally by means of an interiorspreader, so that the flanged ends become interlocked. These ends arefinally flattened by a plunger which closes the seam and completes theoperation.

In the accompanying drawings, Figure 1 is a side elevation of myimproved machine for making can-bodies; Fig. 2, a plan thereof;"

Fig. 3, a vertical longitudinal section, partly in elevation; Fig. 4:,an end view; Fig. 5, a section on line 5 5, Fig. 3; Fig. 6, a detail ofthe core and spreader;Fig. 7, a section on line 7 7 Fig. 6; Fig. 8, adetail elevation of the matrix and folders. 7 Figs. 9 to 1 L arediagrams showing consecutive positions of the operative parts of themachine, and Fig. 15 is a perspective view of a can-body made by themachine.

The letter a represents the work-table of the machine, across whichmoves along guiderails a a slide 5, having grooved posts 6 for thereception of the blank A. The slide is free to travel acrossthefrontopen end of a matrix, which is also open at the back and isshown to consist of two parallel plates 0. These plates have bottomflanges c, slotted at c for the reception of clamp-screws 0 by means ofwhich the plates are adjustably secured to baseplate a. By thisconstruction the machine may be set to different sizes of can-bodies.

d is the power-shaft, having driving-pulley d and adapted tointermittently reciprocate slide Z) in the following manner: Upon shaftd is mounted a pinion d Fig. 3, that meshes into gear-wheel d of acounter-shaft 6F. Shaft 0Z carries crank-disk (i to which is connectedone end of a rod d, Fig. 1. i The other end of this rod is engaged by awristpin 6, projecting from the crank e of a rotating cam-shaft c.journaled in bearings a By means of the construction described arotating movement may be imparted to shaft 6 from shaft cl, thedead-center being overcome in manner hereinafter described. Upon shaft eis mounted a cam 6 that engages a pin 6 at one end of a lever Z2 Fig. 2,fulcrumed at .7). The other end of lever b has a pin 6 which engages theslot I) of a lever 6 fulcrumed at one end, as at 6 The other end oflever Wis provided with a pin 1), which engages a slot 6 formed in ahead 6 of slide 6. The cam will oscillate lever b which will in turnoscillate lever 5 The latter will impart the desired intermittentreciprocating movement to slide 6.

Into the open front of matrix 0 is free to enter a reciprocating core orformer f, which forces the blank A into the matrix, and thus bends itinto a U shape. The core f is carried by an arm f, to which intermittentreciproeating movement is imparted in such a manner that the core isalternately projected into and withdrawn from the matrix. The means foroperating arm f are as follows Upon counter-shaft d*is mounted a cam6Z7, having groove d5, which is engaged by a pin f of a lever ffulcrumed at f*. The upper end of lever f extends into an opening g of aslide 9, guided between a pair of longitudinal rails '9 which aremounted upon bed-plate a, Fig. 5. The arm f is slotted at f for thereception of clamp-screws f, by'which the arm f may be adjustablyconnected to slide g. The rotating movement of the power-shaft 03 willby cam d oscillate lever f and the latter will in turn impart thedesired intermittent reciprocating movement to slide g, and consequentlyto core f. The peculiar construction of the core f will be describedfurther below.

Into the open back of matrix enters a rest or abutment h, which isadapted to engage the back of the can-body and to cooperate with matrix,the rest will be advanced to its normal position by its spring 7L3, Fig.3: The object of the rest it is to furnish a resistance against whichthe blank A is forced by the core f, so that any bulging of the rear ofthe blank is prevented.

After a U shape has been imparted to the blank in the manner describedits ends are successively folded inward, so as to overlap.

-One of these ends has an outwardly-opening hook or flange A, whiletheother end has an inwardly-opening hook or flange A and the operationof the machine is such that the former will be folded slightly inadvance of the latter. The folding of the blank is effected by a pair ofplates or folders i j, which are adapted to be projected partly acrossthe open front of matrix 0 and are reciprocated at right angles to coref. The folders 2' 1' pass through" openings z" j of the matrix, Figs. 3and 9, and are provided with slots 2' for the admission of pins 7' thatextend forward from guides a" j, carried by flanges 0. To reciprocatefolders 2 j, I mount upon shafte a pair of cams r1 1, engaged by levers2' 1", which are fulcrumed at 2' and enter perforations i 1' of thefolders. In this way the rotating movement of shaft 6 is converted intoa reciprocating movement of folders z j. The cam 75 is so set inrelation to cam j that the movement of folder z' slightly precedes thatof folden As thus far described, the ends of the blank are so bent thateach flange A or A is brought opposite the gutter of the opposingflange, Fig. 11. It is now necessary to expand the blank laterally byinterior pressure, so that the flanges become hooked together orinterlocked. This is efl ected in the following manner: One side of theplunger f is chamfered, as at f Fig. 7 so that the front of the core isnarrower than its back. This chamfered side is recessed to accommodate aplate or spreader is, which is adapted to be projected laterally outwardand correspondingly distend the blank folded around the core. Thespreader k is connected by pins 7t" to a plate k contained within ahollow or cavity f of core f, the pins 1% passing through perforations fof core f. The plate is normally forced inward by a spring 71;, whichthus serves to seat spreader is. In order to move the plate 70 andconsequently the spreader 7c, outward and expand the blank in the mannerdescribed, I have devised the following construction: The shaft (1* isprovided with an arm Z, connected at Z to one end of a bentconnecting-rod F, the other end of which is connected at Z to the crankZ* of a rock-shaft Z journaled in bearings a An arm Z of rock-shaft Z isconnected by link Z to a vertically-movable rod or expander m. This rodis guided at its lower end in a bracket m, depending from table a, whileits upperend enters an opening a of said table, which is located withinthe matrix 0, Fig. 2. The rod m is so shaped that it will fill thecavityf 8 of '80 core f, and thereby crowd theplate 70 and consequentlythe spreader It", outward, while the timing of the machine is such thatthe rod on is raised after the core f has been advanced into the matrixand after the folders 2' j have turned the ends of the blank inward. Theascent of the rod 122 will thus by moving the spreader 7r outward swellthe core f in such a mannerthat the folded blank is expanded to itsmaximum extent and its bent ends A A are interlocked, Fig. 12.

The rock-shaft Z has an arm Z connected by link Z to the wrist-pin e of.crank-shaft e, which construction serves to overcome the dead-center ofthe latter.

After the flanges A A have become interlocked in the manner describedthey are compressed to close the seam and complete the operation. Thisis efl ected by means of a plunger n,which is adapted to bear againstthe overlapped flanges and force the same against rod m, so that theseam is flattened and a tight joint is formed. The plunger 91 isoperated in the following manner: The groove (i of cam cl is engaged bya pin n of a lever n fulcrumed at M. The upper end of this lever isconnected at n" to one end of a link a the other end of which is pivotedat a to a slide 92., that carries the plunger n. The slide a is guidedin ways a between the rails g ,Fig. 5, and is slotted longitudinally, asat n", foraccommodating lever f In this way the rotation of cam cl willimpart an intermittent reciprocating movement toslide n, andconsequently to plunger 72.

The operation is as follows: The slide 6, be ing in its terminalposition, is charged with the blank A, Fig. 2, and is then movedlaterally to center the blank in front of matrix 0, Fig. 9. The core fis advanced to bend the blank into the U shape and against the rest lb.The first folder 11 is projected inward, Fig. 10, to turn over flangedend A, and after the first folder has started the second folder 1' isprojected inward to fold flanged end A over flanged end A, Fig. 11. Theexpander m ascends into cavity f of core f and forces spreader k outwardto swell the core and expand the folded blank. so that the flanges A Abecome interlocked, Fig. 12. Meanwhile the slide 6 has receded to itsinitial position ready to be charged with a new blank and the foldershave been withdrawn. The plunger n advances to flatten the seam andclose the joint, Fig. 13, after which it recedes and the expander mdescends. After the expander has cleared the core the spreader 70 isretracted by its spring If, and the core f, together with thesurrounding can-body, is by the back stroke of slide g withdrawn frommatrix 0. The core carries the can-body vertically over adischarge-opening a of bed-plate a, Fig. 14, through which the can-bodydrops into a suitable receptacle. Meanwhile the slide has been advancedto center a new blank in front of the matrix ready for the next advanceof the core.

What I claim is 1. In a machine for making can-bodies, the combinationof a matrix with a recessed core, a spreader having a plate within thecore, and an expander adapted to enter the core and engage the plate,substantially as specified.

2. In a machine for making can-bodies, the combination of a matrix witha chamfered recessed perforated core, a spring-influenced spreader, aplate within the core, pins oonnecting said plate to the spreader, andan expander adapted to enter the core and engage the plate,substantially as specified.

3. In a machine for making can-bodies, the combination of a matrix witha recessed core, a pair of folders, a spreader connected to the core, anexpander adapted to enter the core, and a plunger adapted to beprojected against the expander, substantially as specified.

4. In a machine for making can-bodies, the combination of a matrix witha recessed core, a pair of folders, a slidable rest, a spreaderconnected to the core, an expander adapted to enter the core, and aplunger adapted to be projected against the expander, substantially asspecified.

5. In a machine for making can-bodies, the combination of a slideadapted to receive the can-blank with a matrix, a recessed core, a pairof folders, a slidable rest, a spreader connected to the core, anexpander adapted to enter the core, and a plunger adapted to beprojected against the expander, substantially as specified.

Signed by me at New York city, (Manhattan,) New York, this 9th day ofSeptember, 1904.

JOHN ANDERSON. Witnesses:

WILLIAM SoHULz, FRANK v. BRIESEN.

